The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 1998
Filed:
Mar. 17, 1997
Applicant:
Inventors:
Stefano Spagna, La Jolla, CA (US);
Michael Bancroft Simmonds, Del Mar, CA (US);
Assignee:
Quantum Design, Inc., San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ; G01R / ; G01N / ; G01L / ;
U.S. Cl.
CPC ...
324228 ; 73862338 ; 324226 ; 324259 ; 324261 ; 324262 ;
Abstract
A torque magnetometer employing integrated piezoresistive levers to measure magnetization of very small anisotropic samples. A sample holding platform is cantilevered from the substrate by parallel legs on which piezoresistors have been applied. A Wheatstone bridge, which includes the piezoresistors, is completely integrated on a magnetometer substrate. Specific output connections are made to the electrical conductors of the bridge in a manner to eliminate Hall effect error signals in an alternative embodiment.